Ditching machine



W. E. M CAIN nn'cmue MACHINE Filed Jan. 12. 1920 Patented Oct. 23, 1923.

1,471,498 PATENT OFFICE.

WILLIAM E. MCCAIN, F ERIE, PENNSYLVANIA.

nrrcnmc MACHINE.

Application filed January 12, 1920. Serial No. 850,953.

T 0 all whom it may concern Be it known that l. Vinny E. McC-ux, a citizen of the United States, residingat Erie, in the county of Erie and State of Pennsylvania. have invented new and useful Improvements in Ditching Machines, of which the following is a specification.

This machine is particularly designed to make available the ordinary steam shovel in forming a practical and efficient ditching machine.

The invention is illustrated in the accompanying drawing wherein 1 marks the axle,

i drum 2 the wheels, 3 the frame. 4 the platform rotatirely mounted on the frame, 5 the main boom which is pivoted to the platform by a pin 6, 7 the dipper stick, 8 the crowding engine mounted on the main boom and operating a. pinion 9 and corresponding to the ordinary dipper Stick, 10 a rack on the crowding stick actuated by the pinion 9, and '11 a cable support extending from the main boom to the strut 12 and extending over the.

adjusting drum 13 by which the main boom may be adjusted. These parts are of ordinary steam shovel construction.

' 'An auxilia boom 14 is provided with a. bracket 15 at. its inner end which is pivoted 0n.the pin 6 forming a pivotal mounting for the main boom 5. The bracket carries the auxiliary bootn to a point clearing the wheels so that the platform may be readily swung. A sheave 16 is jourualed on a pin 16' at the end of the auxiliary boom 14 and a lifting line 17 extends from the end of the main boom around the sheave 16, over a sheave 19 at the end of the main boom to a 18 on the platform, the drum bein'g actuated by the usual mechanism (not shown). The swinging dipper mounting or hanger 20 is hung from the pin 16" on the end of the boom 14 and a dipper 21 is rigidly secured to the hanger 20. The dipper has the usual cutting points 22 which are faced toward the machine.- The crowding stick is secured to a bracket 23 on thehanger 20 by means of a pin 24, the bracket being located at some distance from the axis of the hanger 20. A bail 25 isarranged on the dipper and a pull-in line 26 extends from the bail, under :1 sheave 27 on the auxiliary boom 14 and over a. sheave 28 on the main boom to a drum 29 on the platform; the drum 29 being actuated by the usual mechanism (not shown).

'ing position.

The operation of .the machine is as follows: 'lhe auxiliary boom is raised and lowered in the trench by means of the line 17 and the dipper is forced into the work by means of the pull-in line 26. \Vheu the dipper has filled the auxiliary boom 14 is lifted and the hanger 20 is swung outwardly by the crowding action of the crowding stick 7 which brings the dipper to"; dump- The boom is then returned to the work. It will be noted that by the.combined action of the crowding stick and the pull-in line 26 the dipper can be crowded into the work so that it is not dependent entirely on gravity.

WhatJ claim as new is 1. In a ditching machine, the combination of a platform; a boom pivotally mounted upon and extending from the platform; a dipper; a swinging mounting on the boom for the dipper; a crowding stick secured to the mounting; a crowding engine carried indepehdently of the boom operating on the crowding stick; a drum on the platform; and a pull-in line extending from the drum to the dipper.

2. In a ditching machine, the combination of a platform; a boom- .pivotallymounted upon and extending from the platgine carried independently of the boom operating on the dipper stick; a lifting drum on the platform; a lifting line extending from the lifting drum to the boom; a pull-in drum on the platform; and a pullin line extending from the pull-in drum to the dipper. v

3. In a ditching machine, the combina tion of a platform; a. main boom extending from the platform; an auxiliary boom pivolally mounted upon the platform and ex tending from the platform below themain boom; a dipper; a swinging mounting on said auxiliary boom for the dipper; a crowding stick extending from the main boom to the mounting; and a crowding engine operating on the crowding stick. .4. In a ditching machine, the combination of a. swinging platform; a main boom extending from the platform; an auxiliary boom pivotally mounted upon the platform and extending from the platform below the main boom; a dipper; a. swinging mounting on said auxiliary boom for the dipper; I

crowding stick extending from the main boom to the mounting; and a crowding engine operating on the crowding stick.

5. In a ditching machine, the combination 7 of a swinging platform: a main boom extending from the platform; an auxiliary boom pivotally mounted upon the platform and extending from the platform below the main boom; a dipper; a swinging mounting on 'said auxiliary boom for the dipper; a crowding stick extending from the main boom to the mounting; a crowding engine operating on the crowding stick: a lifting drum on the platform: and a line extending from the lifting drum to the auxiliary boom.

6. In a ditching machine. the combination of a platform; a main boom extending from the platform; an auxiliary boom piv otally mounted upon the platform and extending from the platform below the main boom; a dipper; a swinging mounting on said auxiliary boom for the dinner; a crowding stick extending from the main boom to the mounting; a crowding engine -operating on the crowding stick; a pull-in drum on the platform; and a pull-in line extending from the pull-in drum to the dipper.

T. In a ditching machine, the combination of a platform; a main boom extending from the platform; an, auxiliary boom pivolallv mounted upon the platform and extending from the-platform below the main boom: a dipper; a swinging mounting on said auxiliary boom for the dipper: a crowdin; stick extending from the main boom to the mounting: a crowding engine operating on the crowding stick: a lifting drum on the platform: a line extending from the lifting -drum by way of the Jnain boom to the auxiliary boom: :1 pull-in drum on the platform: and a pull-in line extending from the pull-in drum to the dippcr.

In testimony whereof I hereunto set, my hand.

WILLIAM nfMcciux. 

